URL
https://opencores.org/ocsvn/pavr/pavr/trunk
Subversion Repositories pavr
[/] [pavr/] [trunk/] [doc/] [html/] [group__pavr__hwres__iof__perif__int0.html] - Rev 6
Compare with Previous | Blame | View Log
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"> <title>External interrupt 0</title> <link href="doxygen.css" rel="stylesheet" type="text/css"> </head><body> <!-- Generated by Doxygen 1.2.16 --> <center> <a class="qindex" href="main.html">Main Page</a> <a class="qindex" href="modules.html">Modules</a> <a class="qindex" href="pages.html">Related Pages</a> </center> <hr><h1>External interrupt 0<br> <small> [<a class="el" href="group__pavr__hwres__iof__perif.html">Peripherals</a>]</small> </h1><table border=0 cellpadding=0 cellspacing=0> </table> <dl compact><dt><b> Features</b><dd> External interrupt 0 is physically mapped on the line 0 (bit 0) of <a class="el" href="group__pavr__hwres__iof__perif__pa.html">port A</a>. <br> <br> Its associated interrupt flag resides into the IO File register GIFR (General Interrupt Flags Register): <br> <br> <div align="center"> <img src="pavr_hwres_iof_perif_int0_01.gif" alt="pavr_hwres_iof_perif_int0_01.gif"> </div> <br> External interrupt 0 is enabled/disabled by setting/clearing bit 6 in GIMSK (General Interrupt Mask) register: <br> <br> <div align="center"> <img src="pavr_hwres_iof_perif_int0_02.gif" alt="pavr_hwres_iof_perif_int0_02.gif"> </div> <br> If enabled, it can trigger an interrupt on high-to-low transition, low-to-high transition, or on a low level of the interrupt 0 input. This behavior is defined by 2 bits in the MCUCR (Microcontroller Control) register: <br> <br> <div align="center"> <img src="pavr_hwres_iof_perif_int0_03.gif" alt="pavr_hwres_iof_perif_int0_03.gif"> </div> <br> </dl><hr><address align="right"><small>Generated on Tue Dec 31 20:26:30 2002 for Pipelined AVR microcontroller by <a href="http://www.doxygen.org/index.html"> <img src="doxygen.png" alt="doxygen" align="middle" border=0 width=110 height=53></a>1.2.16 </small></address> </body> </html>